Most common record types
- A — Server IPv4 address (e.g.
192.0.2.1) - AAAA — Server IPv6 address
- CNAME — Alias to another hostname
- MX — Mail server with priority
- TXT — Free text (SPF, DKIM, DMARC, domain validation)
- NS — Authoritative nameservers
- CAA — Which certificate authorities may issue SSL certs
TTL
TTL = time-to-live in seconds. Lower values (300 = 5 min) propagate changes faster but increase nameserver load.